Intrusion detector



FIG. 1 is a perspective view of an intrusion detector showing our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof; and

FIG. 7 is a bottom view thereof. 

The ornamental design for an intrusion detector, substantially as shown. 